University of Washington Herbarium, Vascular Plant Collection (WTU-V)

The herbarium's total holdings number over 600,000 specimens of vascular and nonvascular plants, fungi, lichens, and marine algae. The herbarium maintains a regional focus on the Pacific Northwest, covering Washington, Oregon, Idaho, Montana, Alaska, British Columbia, and the Yukon Territory. Other significant collections come from California, the rest of Western North America, and the Pacific Rim. Our oldest specimens date to the late 1800's. Particularly active periods of growth for the herbarium occurred with the incorporation of the herbarium of J. William Thompson in 1943, collections made under the direction of C. Leo Hitchcock in the 1930's - 1950's, and field work since 2002.
Collections Manager: David Giblin,
Collection Type: Preserved Specimens
Management: Data harvested from a data aggregator
Last Update: 18 March 2022
Digital Metadata: EML File
Rights Holder: University of Washington
Access Rights: CC BY-NC-SA 3.0 License (
Collection Statistics
  • 193,847 specimen records
  • 158,301 (82%) georeferenced
  • 50,900 (26%) with images (51,333 total images)
  • 190,292 (98%) identified to species
  • 169 families
  • 1,054 genera
  • 3,776 species
  • 4,781 total taxa (including subsp. and var.)
Extra Statistics
Show Geographic Distribution
Show Family Distribution
Geographic Distribution
Click on the specimen record counts within the parenthesis to return the records for that term